Bonjour

Ranger les fraction dans l'ordre décroissant :

3/2 = (3 x 12) / (2 x 12) = 36/24

5/3 = (5 x 8) / (3 x 8) = 40/24

5/8 = (5 x 3) / (8 x 3) = 15/24

4/6 = (4 x 4) / (6 x 4) = 16/24

11/12 = (11 x 2) / (12 x 2) = 22/24

Donc :

5/3 > 3/2 > 11/12 > 4/6 > 5/8.

Ranger dans l'ordre croissant :

1 = (1 x 30) / (1 x 30) = 30/30

6/2 = (6 x 15) / (2 x 15) = 90/30

15/3 = (15 x 10) / (3 x 10) = 150/30

30/5 = (30 x 6) / (5 x 6) = 180/30

14/15 = (14 x 2) / (15 x 2) = 28/30

Donc :

14/15 < 1 < 6/2 < 15/3 < 30/5.